Should Pentax Develop their own sensor

I would be happy to see Pentax camera with Pentax "own" 1.3x sensor . "own" sensor here means unique - not available with camera from other brand, but not necessarily branded by Pentax. And obviously better in terms of dynamic range / noise level from what Sony sells. But I would be also very disappointed if such a development were wasted just to add a few megapixels to "cropped 135 format" camera - what I need is not more Mpx (10 is more than enough) but dynamic range!